160 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 10 



specimens examined, this seems to be a constant feature. In other respects 

 there is surprising uniformity. In both there is variation in the dentition 

 of the second maxillary plate ; this plate usually has 4 teeth, but occasion- 

 ally 5 or even 6 teeth are present. The postsetal parapodial lobe is simi- 

 larly somewhat prolonged, as in the stem species, but there is little differ- 

 ence in those of anterior and posterior regions, except that those farther 

 back may be directed somewhat obliquely upward. 



Crossland (1924, p. 29) has made an interesting observation on the 

 color of acicula in an individual from the Maldive Archipelago ; in this 

 there are yellow acicula in anterior parapodia, 4 yellow and one brown 

 aciculum in the twentieth segment, 4 yellow and 2 brown acicula in the 

 thirtieth segment, and a single black aciculum in far posterior parapodia, 

 showing a transition of color from anterior to posterior regions. A similar 

 transition is reported below for other species (L. californiensis and L. 

 index). 



Distribution. — L. latreilli japonica is widely known in the Indo- 

 Pacific (Crossland, 1924) but has not been reported from the eastern 

 Pacific. The collections at hand extend the range from Central Califor- 

 nia, south to the Gulf of California, Mexico ; it occurs in intertidal zones 

 to 40 fms. 



Lumbrineris inflata Moore 



Moore, 1911, pp. 289-291, pi. 19, figs. 128-132, pi. 20, figs. 133, 134; 



1923, p. 257. 

 L. albifrons Crossland, 1924, pp. 50-55, figs. 65-72; Monro, 1933, p. 85. 



Collections.— 559-36 (1) ; A 12-30 (1). 



The prostomium is depressed globular, broad in front. Composite 

 hooded hooks are present from the first setiger, but are weakly articulate, 

 as originally described. The maxillaiy foiTnula is unique in that the sec- 

 ond plate has 5 teeth on either side ; maxilla III has 3 or 4 teeth on a side ; 

 maxilla IV has 2 teeth on a side. Acicula are clear yellow. The postsetal 

 lobe in posterior parapodia is elongate, digitate, directed laterally or ob- 

 liquely upward. 



L. cingulata Treadwell (1921, pp. 97-98) from the West Indian re- 

 gion (not Ehlers, 1897, p. 76) may belong here, since maxillae III and 

 IV have 3 and 2 teeth, respectively; parapodia have similarly elongate, 

 postsetal lobes and the outline of mandibles seems to be the same. In it, 

 however, the hooks of the anterior region were not described beyond the 

 statement that there was in the fifth somite [third setiger] a "hooded 



